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Mattel Inc

MAT
Exchange
Nasdaq
Industry
Dolls & Stuffed Toys
SEC CIK
0000063276

In the last 90 days, Mattel Inc insiders filed 0 open-market purchases and 1 sale; 404 institutions reported holding it in 13F filings for Q2 2026, worth $4.24B in total; Southeastern Asset Management (Longleaf) is the only superinvestor holding it.

13F holders, Q1 2026

Institutional positions in Mattel Inc as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
430
−3 vs. Q4 2025
Shares held
299.6M
+17.2M (+6.1%) vs. Q4 2025
Total value
$4.36B
−$1.26B (−22.4%) vs. Q4 2025
New holders
72
139 more added
Sold out
75
139 more reduced

9 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting MAT on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ1 2026: 430 institutions
Q1 2021: 325 institutionsQ2 2021: 327 institutionsQ3 2021: 340 institutionsQ4 2021: 358 institutionsQ1 2022: 383 institutionsQ2 2022: 377 institutionsQ3 2022: 375 institutionsQ4 2022: 359 institutionsQ1 2023: 336 institutionsQ2 2023: 319 institutionsQ3 2023: 357 institutionsQ4 2023: 376 institutionsQ1 2024: 384 institutionsQ2 2024: 390 institutionsQ3 2024: 380 institutionsQ4 2024: 421 institutionsQ1 2025: 449 institutionsQ2 2025: 435 institutionsQ3 2025: 439 institutionsQ4 2025: 442 institutionsQ1 2026: 430 institutionsQ2 2026: 404 institutions
Value heldQ1 2026: $4.36B
Q1 2021: $6.69BQ2 2021: $6.92BQ3 2021: $6.50BQ4 2021: $7.57BQ1 2022: $7.72BQ2 2022: $7.83BQ3 2022: $6.58BQ4 2022: $6.22BQ1 2023: $6.39BQ2 2023: $6.54BQ3 2023: $7.35BQ4 2023: $6.36BQ1 2024: $6.71BQ2 2024: $5.50BQ3 2024: $6.17BQ4 2024: $5.85BQ1 2025: $6.30BQ2 2025: $6.29BQ3 2025: $5.20BQ4 2025: $6.26BQ1 2026: $4.36BQ2 2026: $4.24B
Institutions holding MAT and their total value by quarter
QuarterHoldersValue
Q2 2026404$4.24B
Q1 2026430$4.36B
Q4 2025442$6.26B
Q3 2025439$5.20B
Q2 2025435$6.29B
Q1 2025449$6.30B
Q4 2024421$5.85B
Q3 2024380$6.17B
Q2 2024390$5.50B
Q1 2024384$6.71B
Q4 2023376$6.36B
Q3 2023357$7.35B
Q2 2023319$6.54B
Q1 2023336$6.39B
Q4 2022359$6.22B
Q3 2022375$6.58B
Q2 2022377$7.83B
Q1 2022383$7.72B
Q4 2021358$7.57B
Q3 2021340$6.50B
Q2 2021327$6.92B
Q1 2021325$6.69B

Institutions, Q1 2026

Shares, value and share of portfolio for each institution holding Mattel Inc; share changes are against Q4 2025.

Institutions holding MAT in Q1 2026
InstitutionSharesValue% of portfolioChange in sharesAction
EdgePoint Investment Group Inc.49,140,882$714.0M5.72%+1,799,640+3.8%Added
Primecap Management Co29,697,924$431.5M0.34%−106,151−0.4%Reduced
BlackRock, Inc.27,322,293$397.0M0.01%+476,860+1.8%Added
Vanguard Capital Management LLC13,657,490$198.4M0.00%+13,657,490New
Vanguard Portfolio Management LLC13,624,399$198.0M0.01%+13,624,399New
Ariel Investments, LLC13,567,083$197.1M2.21%+1,034,950+8.3%Added
Southeastern Asset Management IncSuperinvestorSoutheastern Asset Management (Longleaf)12,812,157$186.2M9.16%+4,241,829+49.5%Added
Dimensional Fund Advisors LP11,052,845$160.6M0.03%+783,102+7.6%Added
State Street Corp9,718,373$141.2M0.00%+108,662+1.1%Added
LSV Asset Management6,238,390$90.6M0.20%+111,958+1.8%Added
Geode Capital Management, LLC6,174,146$89.7M0.01%+182,945+3.1%Added
Price T Rowe Associates Inc6,091,878$88.5M0.01%−436,403−6.7%Reduced
Alyeska Investment Group, L.P.4,608,679$67.0M0.19%+1,163,319+33.8%Added
AQR Capital Management LLC4,618,323$66.6M0.03%+517,650+12.6%Added
D. E. Shaw & Co., Inc.3,883,399$56.4M0.04%+1,512,537+63.8%Added
Marshall Wace, LLP3,726,579$54.1M0.06%+3,712,984+27,311.4%Added
Morgan Stanley3,547,424$51.5M0.00%−1,802,866−33.7%Reduced
Goldman Sachs Group Inc3,543,492$51.5M0.01%+971,422+37.8%Added
Charles Schwab Investment Management Inc3,372,877$49.0M0.01%+116,359+3.6%Added
Millennium Management LLC2,801,135$40.7M0.03%+567,150+25.4%Added
Northern Trust Corp2,794,902$40.6M0.01%+49,878+1.8%Added
Victory Capital Management Inc2,589,974$37.6M0.02%+667,664+34.7%Added
Squarepoint Ops LLC2,368,621$34.4M0.07%−1,294,843−35.3%Reduced
UBS Group AG2,304,897$33.5M0.01%+591,947+34.6%Added
Point72 Asset Management, L.P.2,221,256$32.3M0.06%−2,120,198−48.8%Reduced
SEI Investments Co2,159,405$31.4M0.03%+1,117,726+107.3%Added
Serenity Capital Management Pte. Ltd.2,002,032$29.1M7.02%−383,611−16.1%Reduced
Bank of New York Mellon Corp1,946,260$28.3M0.01%−70,524−3.5%Reduced
Vanguard Fiduciary Trust Co1,921,414$27.9M0.01%+1,921,414New
Long Focus Capital Management, LLC1,919,166$27.9M1.22%+1,919,166New
Bank of America Corp1,914,866$27.8M0.00%+244,094+14.6%Added
Frontier Capital Management Co LLC1,691,423$24.6M0.25%−2,524,008−59.9%Reduced
Fuller & Thaler Asset Management, Inc.1,648,138$23.9M0.08%−4,748,414−74.2%Reduced
JPMorgan Chase & Co1,402,235$19.9M0.00%−1,142,854−44.9%Reduced
HBK Investments L P1,300,000$18.9M0.24%+1,300,000New
King Luther Capital Management Corp1,238,336$18.0M0.08%+269,421+27.8%Added
Quantinno Capital Management LP1,222,491$17.8M0.03%−3,746−0.3%Reduced
Interval Partners, LP1,193,062$17.3M0.60%+1,193,062New
Qube Research & Technologies Ltd1,159,230$16.8M0.02%−148,825−11.4%Reduced
Edmond de Rothschild Holding S.A.960,000$13.9M0.20%+800,000+500.0%Added
Invesco Ltd.913,342$13.3M0.00%+37,414+4.3%Added
Rhumbline Advisers805,163$11.7M0.01%−4,959−0.6%Reduced
Gotham Asset Management, LLC802,437$11.7M0.04%+738,747+1,159.9%Added
CastleKnight Management LP715,376$10.4M0.49%+368,876+106.5%Added
UBS Asset Management Americas Inc712,914$10.4M0.00%+64,669+10.0%Added
Principal Financial Group Inc694,038$10.1M0.01%+25,289+3.8%Added
Arrowstreet Capital, Limited Partnership644,268$9.36M0.01%+539,373+514.2%Added
Thompson Siegel & Walmsley LLC621,513$9.03M0.16%+333,713+116.0%Added
Tudor Investment Corp Et Al621,062$9.02M0.05%+393,453+172.9%Added
Swiss National Bank615,300$8.94M0.01%−20,000−3.1%Reduced
California Public Employees Retirement System593,247$8.62M0.01%−1,366−0.2%Reduced
American Century Companies Inc590,470$8.58M0.00%−519,455−46.8%Reduced
Nuveen, LLC587,995$8.54M0.00%+28,514+5.1%Added
Livforsakringsbolaget Skandia, Omsesidigt30,000$8.29M0.32%−198,700−86.9%Reduced
Galvin, Gaustad & Stein, LLC558,382$8.11M0.65%−703,838−55.8%Reduced
Schonfeld Strategic Advisors LLC554,575$8.06M0.07%−503,271−47.6%Reduced
Alliancebernstein L.P.397,546$7.89M0.00%−7,285−1.8%Reduced
Hancock Whitney Corp521,936$7.87M0.14%−38,481−6.9%Reduced
CI Private Wealth, LLC538,084$7.81M0.01%+350,071+186.2%Added
Winton Group Ltd509,872$7.41M0.26%+493,129+2,945.3%Added
Capital Fund Management S.A.505,750$7.35M0.07%+385,930+322.1%Added
Jupiter Asset Management Ltd496,831$7.22M0.04%+496,831New
Citadel Advisors LLC468,222$6.80M0.00%−147,765−24.0%Reduced
Man Group plc445,006$6.47M0.01%+106,911+31.6%Added
Manufacturers Life Insurance Company, The433,951$6.31M0.01%−46,370−9.7%Reduced
BNP Paribas Arbitrage, SA429,259$6.24M0.00%+381,907+806.5%Added
Legal & General Group Plc410,448$5.96M0.00%−84,020−17.0%Reduced
First Trust Advisors LP407,750$5.92M0.00%−201,490−33.1%Reduced
Trexquant Investment LP397,418$5.77M0.04%+351,096+757.9%Added
Barclays PLC388,853$5.65M0.00%−118,320−23.3%Reduced
Retirement Systems of Alabama381,025$5.54M0.02%+8,014+2.1%Added
Universal- Beteiligungs- und Servicegesellschaft mbH379,147$5.51M0.01%−41,027−9.8%Reduced
Hotchkis & Wiley Capital Management LLC376,227$5.47M0.02%+26,347+7.5%Added
Jacobs Levy Equity Management, Inc374,109$5.44M0.02%+374,109New
California State Teachers Retirement System373,051$5.42M0.01%+69,429+22.9%Added
Walleye Capital LLC362,496$5.27M0.03%+361,454+34,688.5%Added
State Board of Administration of Florida Retirement System344,641$5.01M0.01%−6,364−1.8%Reduced
Ameriprise Financial Inc343,880$5.00M0.00%−72,662−17.4%Reduced
Russell Investments Group, Ltd.312,817$4.54M0.00%+203,494+186.1%Added
New York State Teachers Retirement System308,923$4.49M0.01%−18,118−5.5%Reduced
Illinois Municipal Retirement Fund300,659$4.37M0.06%+59,085+24.5%Added
Engineers Gate Manager LP295,918$4.30M0.05%+33,659+12.8%Added
Bank of Montreal294,174$4.27M0.00%−98,323−25.1%Reduced
Envestnet Asset Management Inc288,985$4.20M0.00%−75,408−20.7%Reduced
Susquehanna International Group, LLP271,205$3.94M0.01%+151,379+126.3%Added
Canada Pension Plan Investment Board254,000$3.69M0.00%+70,100+38.1%Added
Vanguard Global Advisers, LLC252,761$3.67M0.00%+252,761New
Holocene Advisors, LP244,739$3.56M0.01%+119,591+95.6%Added
Vanguard Asset Management, Ltd244,208$3.55M0.00%+244,208New
Havemeyer Place LP237,548$3.45M0.40%+237,548New
Grantham, Mayo, Van Otterloo & Co. LLC233,425$3.39M0.01%+93,086+66.3%Added
Van Eck Associates Corp232,013$3.37M0.00%−151,400−39.5%Reduced
State of Wisconsin Investment Board226,183$3.29M0.01%+28,358+14.3%Added
Great Lakes Advisors, LLC224,405$3.26M0.03%−60,183−21.1%Reduced
Allspring Global Investments Holdings, LLC213,136$3.10M0.01%−597,834−73.7%Reduced
XTX Topco Ltd193,172$2.81M0.05%+182,519+1,713.3%Added
Wells Fargo & Company189,774$2.76M0.00%+119,610+170.5%Added
Y-Intercept (Hong Kong) Ltd186,638$2.71M0.05%+142,845+326.2%Added
Quinn Opportunity Partners LLC183,070$2.66M0.14%+165,000+913.1%Added
Great West Life Assurance Co175,998$2.56M0.00%00.0%Unchanged